Eberhardt, L. Lee

4 publications

Eberhardt, L. Lee; Chapman, Douglas G.; Gilbert, J. R. (detail)
1979A review of marine mammal census methods.
Wildl. Monogr. 63: 1-46.
—
Eberhardt, L. Lee (detail)
1982Censusing manatees: a report on the feasibility of using aerial surveys and mark and recapture techniques to conduct a population survey of the West Indian manatee.
Manatee Population Research Rept. (Gainesville, Fla., Florida Cooperative Fish & Wildlife Research Unit) No. 1: 1-18. 1 tab. 3 figs. Dec. 1982.
—Some copies have an early version of the cover & title page which incorrectly gives the author's name as Lee L. Eberhardt. See also Appendix 1. Recommends development of peduncle and other sorts of tags, and more extensive and sophisticated analysis of abundance data from warm-water refugia, in order to provide indices of population trends. These would serve as the basis for a census method, but an immediate state-wide census is not recommended. The population in Florida is assumed to be well in excess of the currently accepted figure of 1,000. Fig. 1 shows trends in counts at 6 refugia, 1977-81.
Eberhardt, L. Lee; O'Shea, Thomas J. (detail)
1995Integration of manatee life-history data and population modeling. In: T. J. O'Shea, B. B. Ackerman, & H. F. Percival (eds.), Population biology of the Florida manatee (q.v.).
Information & Technology Rept. (U.S. Dept. Interior, Natl. Biological Service) (vi + 289) 1: 269-279. 3 tabs. 2 figs. Aug. 1995.
—
Eberhardt, L. Lee; Garrott, Robert A.; Becker, B. L. (detail)
1999Using trend indices for endangered species.
Mar. Mamm. Sci. 15(3): 766-785. 8 figs. "July 1999" (mailed June 8, 1999).
—Concludes in regard to Florida manatees that previously-used multiple regression models overestimated the rate of change of the East Coast population as determined from three other sources (a covariance model, a non-linear model, and the rate estimated from reproductive and survival data) (766-767, 770-774, 781-783).